<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>Title</title>
    
    <style>
      [v-cloak] {
        display: none;
      }
    </style>
  </head>
  
  <body>
    <div id="app">
      <div>{{message}}</div>
      <div v-cloak>{{message}}</div>
    </div>
  </body>
  
  <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
  
  <script>
    setTimeout(() => {
      Vue.createApp({
        data() {
          return {
            message: 'Hello'
          };
        }
      }).mount('#app');
    }, 1000);
  </script>
</html>